We have used the anelastic 3D MHD code ``ANMHD'' to perform
simulations of emerging magnetic flux tubes moving in a
gravitationally stratified background model representing the
solar convection zone. The MHD model is computed within a
local Cartesian geometry, with Coriolis forces included,
using the f-plane approximation.

The evolution of flux tubes computed with the code will be
compared and contrasted with results computed with the thin
flux tube approximation.